How to count the number of files in a directory.  At some point you'll have a directory or directories that you need to know the number of files in them.  On Linux, the list command (ls) is piped with the wc -l command. ls | wc -lThis command works great if all the files are located in one directory.  What about if you have multiple directories.  Then you will need to use the find command piped with the wc command find <directory> -type f | wc -lThis command only...

I had generated a backup of key directories on the server - see Create a Ubuntu backup shell script.  With a backup in hand, now it was time to test how to unpack a backup and overwrite the directories. First I unpacked the backup to a temporary directory tmp-cc. Now I wanted to replace several of the directories on the server.  Starting with home, var and etc.   But what is an efficient method to overwrite a directory?   Also removing any directories that aren't in the...